Perforating-machine.



L. C. SOHWENSEN. PERFDRATING MACHINE, APPLICATION FILED MAR.14. 191.5.

Patented Dec. 1, 19%

2SHBETS-SHEET 1.

L. C. SGHWENSEN. PERFORATING MACHINE.

APPLICATION FILED MAR.14,1913.

1,1 19,460. r Patented Dec. 1,1914.

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LOUIS C. SCHWENSEN, OF NEW YORK, N. Y.

PERFOBATING-MACHINE.

Application filed March 14, 1913.

To all whom it may concern:

Be it known that I, LOUIS C. Scnwnxsnn, a citizen of the United States,residing in the city of New York, borough of Brooklyn, county of Kings,and State of New York, have invented certain new and useful Improvementsin' Perforating-lllachines, of which the following is a specification.

While applicable for the formation of perforation for various purposes,and in various materials, my a paratus is designed more particularly toafford simple and effective means for making the stencil patterns usedin the manufacture of clothing, embroidery, &c., and in stencils fordecorative purposes and designs generally.

The invention consists in the construction and arrangement of partsherein described and claimed specifically, and illustrated in theaccompanying drawings, in which,

Figure 1, is a side elevation of the apparatus; Fig. 2, a plan thereof;Fig. 3, a front elevation, partly broken away; Fig. 4, a View of theunder side of the appar'atus; Fig. 5, a view of the lower end of theplunger and punch; Fig. 6, an end view of the punch; Fig. 7 a cent allongitudinal section thereof; Fig. 8, a section upon line 8--8 Fig. 4;Fig. 9, a detail of the electric controller.

The frame or carriage C, has a plurality of ball rollers 72, b, b, I),mounted in its base to facilitate travel freely in all directions overthe surface of the aper or other material to be perforated. f our ofthese anti-friction rollers b, I), b, b, are used in the constructionshown in the drawings, seated in recesses a, c, in the base (2, of thecarriage C, and being held therein by a foot plate f, screwed to theunder side of said base, as will be seen more particularly by referenceto Figs. 4 and 8 of the drawings.

Springing from the base 0, of the carriage is the standard 0 on whichthe operative parts are mounted, the rear portion of said standard 0being shaped in the form of a handle 0 with the finger opening 0*, infront thereof. Above the handle the standard is formed with a shelf ortable 0', to which a small electric motor M, is attached; and mounted inbearings c, c, on the upper part of the standard infront of the motortable a", is a counter shaft 8, (see Fig. 1) to which is rigidlvattacheda spur gear a, meshing with a driving pinion m,

Specification of Letters Patent.

Patented Dec. it, Serial No. 754,268.

mounted on the armature shaft m, of the electric motor M.

T9 the forward end of the counter shaft is rigidly secured a crank disk,(1, formed with a crank pin d, which carries a sliding block (2,positioned between ways 0', e, of the cross head 0, attached to theplunger p, mounted in guide bearings 0 0 on the front of the standard.The lower end of the plunger 77, is screw tapped to receive the threadedshank g, of the perforator Q, a lock nut being used to adjust and holdthe perforator in )osition on the plunger 72, the perforator eing formedwith the central passage 9, and lateral. extension thereof g, for theaccommodation and discharge of the material detached from the paper orother material during the perforation there of, as will be clearlyunderstood by reference to Fig. 7.

The rear anti-friction rollers b, I)", are preferably positionedsubstantially in line with the central transverse plane of the elec tricmotor M, above, so that the weight of the latter maybe utilized as acounter-poise in tilting the carriage baclnvard on said rear balls I),b, for the purpose of withdrawing the perforator Q, from the materialunder treatment; and this tilting backward of the apparatus as indicatedin dotted lines in Fig. 1, is provided for by making the heel c of thebase 0, curved upward and backward as shown more particularly in saidFig. 1, so that the curved heel o not only admits of the rockingbackward of the carriage C, but may be utilized as a support or rest forthe same when so tilted in position.

The foot plate f, of course conforms at the rear to the shape of theheel c", of the base 0; and its front edge is formed with stripper toesf, f, which straddle the lower end of the perforator Q, when the latteris lowered, and act as retainers to prevent the material under treatmentfrom following the upward movements ofsaid perforator Q.

As will be seen by reference to Fig. l, the handle 0 of the carriage C,is inclined forward, which fact not only adapts it to be convenientlyand naturally grasped by the right hand of the operator, but also en--ables the latter to exert forward pressure on the perforator ifnecessary in the treatment of thick material. Thus the carriage may beconveniently and naturally tilted forward or backward duringmanipulation in tit) fit)

perforating, facilitating the operators control of the apparatus underall conditions of use; and'in order to render this control still'morecomplete and perfect, I mount in the carriage C, underneath the motortable '0 a power-controlling switch R, operated means R, and I do notlimit myself in this respect, the device shown in Fig. 9 being a simpleillustration of means controlled by a single push button r, foralternately throwing the motor M, into and out of operative circuit,consisting in interposing in said circuit a ratchet wheel 7, having armsr (one for every other ratchet tooth) adapted to contact intermittentlyand alternately with a contact point a to close the circuit,the circuitbeing open during the interim i. e., between successive contacts of thearms 7, with the point r By this means the convenient and perfectcontrol of the apparatus bythe right hand of the operator is renderedabsolute so that most eitective results can be attained, and errors orimperfections in perforation avoided without the exercise of any specialskill or experience on the part of the operator.

By my invention individual patterns heretofore used in the laying out ofparts of garments, 620., may be dispensed with, the traced patterns ordesigns being marked oil on a large sheet of suitable material by meansof perforations which admit of the use of powdered chalk or othersuitable material in marking off the goods to be cut to pattern,

and the stencil thus produced being capable of use indefinitely. Theapplication of the device to the production of flexible stencils forartistic and industrial designs forre production is also obvious.

What I claim as my invention and desire to secure by Letters Patent is,

1. In a perforating device of the character designated, the combinationof a base provided with stripper toes extending in rent of the base tokeep the paper down, a reciprocating perforator mounted thereon, amotor, a hand grip located on the base on a line with the axis of themotor, said base.

having a curved heel for the purpose of enabling the base-to be rockedto prevent perforating.

2.1m a perforating device of the charac-- ter designated, thecombination of a base,

almanac a motor detachably mounted on said base, a countershaftsupported on said base, a reciprocating perforator mounted on said base,a hand grip located on the base on a line with the axis of the motor,and means interposed between said motor and perforator including saidcounter-shaft for reciprocating the said perforator.

3. In perforating apparatus of the character designated, the combinationof a carriage, a reciprocating perforator mounted thereon, an electricmotor mounted thereon, and means interposed between said mo tor and saidperforator for reciprocating the latter, said carriage being formedwith. a base having a curved heel, and being provided with anti-frictionball bearings, two of which are in alinement with the transverse axis ofthe electric motor, for the purpose described.

4. In perforating apparatus of the character designated, a carriage, areciprocatorye perforator mounted therein, a motor, means interposedbetween the motor and perforator for reciprocating the latter, saidcarriage having one end curved upward and backward and constructed toadmit of the rocking backward of the carriage and to form a rest for thesame when tilted.

5. In perforating apparatus of the character designated, a carriage, areciprocatory perforator mounted therein, a motor, means interposedbetween the motor and perforator for reciprocating the latter, saidcarriage having one end constructed to admit of the rocking backward ofthe carriage and to form a rest for the same when tilted, andanti-friction ball bearings on said base two of which are in alinementwith the transverse axis of the motor.

5. In perforating apparatus of the character designated, the combinationof a carriage formed with a forwardly inclined rear handle with a fingeropening in front thereof, a, reciprocating perforator mounted on saidcarriage, anti-friction ball hearings on said carriage two of whicharein alinement with the transverse axis of the motor, an electric motormounted thereon, and means intermediate between said motor and saidperforator for reciprocating the latter, said carriage having one endformed to admit of the carriage rocking backward, and constructed toform a support for the same in tilted position, for the purposedescribed;

LOUIS .C. .SCHVVENSEN,

Witnesses:

Geo. WM. MIATT, Lninmn Miami.

